This flight on the Grand Union Canal, just west of Warwick, delivers 21 locks in less than two miles and provides a stern test of boater stamina. One of the most picturesque spots on the Grand Union Canal, it has been feared and revered in equal measure since the days of the working boatmen.
The flight was widened in the 1930s as part of a scheme to upgrade the Grand Union Canal - look out for the distinctive paddle gear, which boaters use to operate the locks. The old narrow locks are still evident next to the newer locks.
Take a look at our feature about the history of Hatton Locks.